negative refraction

How is Negative Refraction Achieved?

Negative refraction can be achieved through the careful design of metamaterials at the nanoscale. These materials are composed of periodic structures smaller than the wavelength of the incident light, allowing them to interact with electromagnetic waves in unique ways. The key lies in the _nanostructuring_ of materials to create a negative effective permittivity and permeability, which leads to a negative index of refraction.

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